Change-speed and reversing mechanism.



PATENTED use. 24, 1907.

G, W. MARBLE. CHANGE SPEED AND REVERSING- MEGHANISM.

APPLIOATIGH FILED JAN. 10, 1906.

UNITED STATES PATENT OFFICE.

cnoacn w. MARBLE, or CHICAGO, ILLINOIS, ASSIGNOR or ONE-HALF TO WII *IAM R. DONALDSON, or CHICAGO, ILLINoIs.

CHANGE-SPEED AND .REVERSING MECHANISM.

Specification of Letters Patent.

Patented Dec. 24, 1907.

Application filed an ary 10. 1906- Serial No. 295,372.

To all whom it may concern:

Be it known that I, GEORGE W. MARBLE, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and-State of Illinois, have invented certain new and useful Improvements in Change- Speed and Reversing Mechanisms; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to change speed and reversing mechanisms and more particularly to a frictionally operated mechanism of the class described.

the class described wherein variations in speed both forward and reverse are secured by frictionally engaging mechanlsms affording a plurality of speeds in both directions operating ractically without loss of power and silent y and in which-the friction elements disengage when changing speed It is a further object of the invention to construct a device whereby 'the drivcnelement couples directly with the driving shaftand obviating the slippage due to most frictionally operated devices.

. The invention consists in the matters here-' inafter described and more fully pointed out and defined in the ap ended claims.

In the drawings: igure 1 is a central vertical section of a device embodying my inven.- tion showing the'mechanism in neutral position. Fi '1. Fig. 3 is a section taken on line 3 3 ofig. l. Fig. 4 is an enlarged detail of the foot lever.

As shown in the drawings: A indicates the main driving shaft upon which is rigidly Fig. 2 is a section taken on line 2'2 of sleeve (Z through which said shaft passes is a friction wheel or disk D of smaller size than the balance wheel B. Said friction disk is provided in its inner face opposite the balance wheel with a concentric groove or track affording an inner friction face (1" corresponding with the hub friction face 1) on the baL ance wheel and a peripheral friction face (1 correspnnding wit 1 the peripheral friction face I) in the balance wheel. Said friction wheel D is provided on its outer face adjacent the friction wh'eel'O with a concentric flange d complementally shaped on its inner face With the friction wheel C and adapted to engage thereon and as shown said flange d is shaped on its outerside to constitute a belt pulley over said friction faces and islikewise at its edge provided with sprocket teeth indicated by (1 whereby a sprocket chain may be a )plied thereto for transmitting the power. Sai shaft is journaled in suitable bearings E and E upon the frame e and e which maybe of any suitable'constructio'n. and; as shown, adjacent the balance'wheel B; a bracket arm erextends' slightlyfabove the periphery of said balance wheel. In a like manner extending above the friction wheel D, is a bracket arm e, rising from the bearing E.

Hinged. on the upper end ofthe arm 6 is a le,,-'

through said aperture is a lever F at the' lower end of which. is provided an elongated slceve'f in which is journaled a shaft f at I one end of which is rigidly secured a large friction pulley F which fits within the groove in the face of the balance Wheel and is adapted for engagement with either friction face :20 the peri ieral friction face on the balance 35 oontrolledrdetent gas shown in Fig. 1 an l'eysare shifted outwardly:

50 I When the hi tionvv'he'el-D has attained 65' and jamming the "friction flange d thereon therein. At the posits end of the shaft is l secured a smaller iction pulley l? in a like i manner fittin Within the move or track in I the frictionw eeLD, .Sai slee'vefiis-pivot' 5 ed the slot in said lever and centrally disposed on said lever at the central part1 thereof is an upwardly curved and notched i edge to form a segment. A spring controlled deten f, is carried on said lever i and is adapted to hold the friction pulle s inadjusted position and. when retracte' permits said fi'iction ulls s to be inclined to bring the larger frrctionpulley into en' 'a'gement with the hub .of'the balance whee and the smaller friction pulley'with the fieriph cry of the friction wheel D, thus allot-dings slow reversing drive or by'roclring the friction pulleys in opposite directions the larger friction pulIe 1s brought into engagement with wheel W ilei the smaller is brought into en gtgementwith the hub of the friction wheel thusafiording more rapid re verse. Means are also provided for forcing both said frietion ulleys bodily down upon the hubfric-' tion' aces lf'and d and for shifting the same outward bringing both thereoi into en age ment wit the peripheral friction faces fiend d. For this purpose as shown the inner end ofsaid lever'is secured to the bracket are. e. by means ofabent'lever- G which is ful-' cruincd on-the'jend of the lever F and the other end thereof is hinged to said bracket e Said lever G is also provided with a spring engages a suitable segment ad'when retracted permits the lever to: h syvung in.

I yalgdl or outwardly thus fcrcin the shaft] 0 1 14.0-pul1eys' .and 'F therewit or, if shifted in downwardly caring t e friction c the opposite direction, elevating the same bringing 'said friction pulleys into engage- 1 ment with the/peripheral friction faces on;

.the b'alance'vv'heel and on the frictionwheel I.) in this, manner. it" will be seen that a rela- V ',t ive slow 'sp'ee'cl issecuredfwhenthe friction ulleys F andF are shifted inwardly and a her speed is secured when the friction put...

considerable speed the sainejis coupled with the-shaft thus utilizing the direct speed of rotation of the'shaft A. Means are provided for shifting-the friction wheel :1), outwardly into elig'agement with the friction wheel 0 For this purpose a lever H which as shown is a foot lever thhugh not necessarily so is pivotally engaged u' on a. metallic strap h con- .nected.w1th'the sine and i'sprovidd at its i middle with a". okeih whichenga es around the sleeved an in which is pivotal y engaged a b'earin' ring h ooved'internaliy to recelve l a collarsecure on said sleeve so that res-1 see,

' adg'susted in its sure applied. to said. lever acts to force said sleeve and the friction Wheel l longitudi vnally of the shaft and the flange 11' firinl upon-tho Friction wheel 0. As shown a puli 'ing spring 72' is secured on said. lever and on any relatively immovable parts, for instance the lover F, so that when pressure is removed from said. lever Hi, the friction wheel D is im'mediatclv noted from the friction wheel (J.

The operation is as follows: The shaft A which may beconsiderell rotating continu- .ously in one direction ca ries the balance wheel thereon at the same rate and. the fric tion dislr l) being rotstahiy secured on said shaft rotates only i'ricticnally engaged. Referrin in propellin a vehicle (though obviously it may be user for any other purpose) Whenit is desired to start the vehicle both friction milleys are forced downwardly or inwardly -:iito engagement nith the huh i'rictionface 31 in thefhalance Wheel and the hub friction. face at in the friction wheel I). In this mam screwing to the relatively sm all size of the hill) frictionrface h as compared with the'friction pulley F a slow forward rotation is-secured' to said friction disk as employed in the friction wheel D and a corresponding movement is im' 'arted to the vehicle by means of a suitahie sprooket chain or belt secured on the pulley face or the soroclret'd Havin started the vehicle the is-ver G is then t rovrn op ositelv elevating both the friction pulleys 2 an .1 into engagement with the peripheral friction surfaces T) and i and accelerating the speed. Having attained a suficient momentum the lever 11- is. actuatedto' foroe the friction disk D longitudinally of'the axle A and into engagement- .upon the firiction Wheel C and at the same moment or priorfthereto the lever is released nermitting thefriction-pulleys F and F to move to their neutral position as shown.

The transmission device is new Position for full speed. ahead. hould it be oeslred to reverse; the foot is re in Fig. 1.

Wheel to retract .i'rom the friction Wheel G and the lever F is actuated to rock the shaft f bringing either the friction pulley F or F into engagement with the inner friction faces.

of the respective chmplemental members;

and the other thereof-into engiigement with the peripheral friction "laces. reversing the rotation of the friction wheel D and ofcourse the'sprocket (1%. Inasmuch as there are no ears to istri this reversal can be accomplis ed very quickly and the trim tion pulleys may of course he used as brakes,

rec

moved from the lever H allowing the friction either event as desired. It is also obvious that any suitable motive power may be employed for driving the shaft A and of course the invention maybe applied either as a transmission device for a vehicle or for any other purpose for which a construction of the kind is adapted. I therefore do not purpose limiting this application for patent otherwise than necessitated by the prior art obviously many de tails of consiruciion and operation. may be varied ithou departing from the princi nes of nay-invention.

I claim as my invention:

1. A friction speed transmission device embodying a continuously rotating shaft, a wheel rigidly secured thereon having a friotion face at its hub and within is; peri 'ihery,

an op ositely facing friction disk or u'heel" slidab y engaged upon the shaft and having a friction face adjacent the hub and within its periphery, a shaft journaled betn'een'said disks or'whe'els, a frictionwheel rigidly .secured on each end thereof, one extending into position to engage either friction face of the rotatable friction wheel, the other toen- 'I gage either friction face of the rotatable friction wheel and means for shifting said fric-,

tion wheels into engagement with the respective friction faces.

2. Ina friction transmission device the combination with a shaft of the balance wheel-secured thereon having 'a friction face atfthehub and a friction face within the periphe'ry of the same, a friction wheel rotatably secured upon the shaft and facing the balance wheel, a shaft extending substantially parallel ofthe main shaft, a friction wheel rigidly secured on each end thereof, one of the same adapted to engage the friction faces on the balance wheel, the other to engage the rotatable friction heel there being s orooket .teeth on said rotatable'fricticn wheel 3f A friction transmission device embracing a main shaft, oppositely facing-friction wheels thereon, one rigidly secured to the shaft, the other rotatable-and slidable thereon longitudinally, a fixed friction wheel at the rear 'of said movable friction wheel and adapted to engage a friction face thereon when the latter is moved longitudinally, a

- shaftjournaled' substantially parallel with w. thenialn shaft, a friction Wheel on each-end thereof, adapted to engage both the first. married fixed friction wheel and. the rotatable friction wheel, means for adjusting said shaft fto reverse the rotatable friction wheel on the main shaft, means for adjusting said shaft to drive said rotatable wheel at different speeds and means for shifting the'rotat'able friction wheel into engagement with "the fixed friction wheel at the rear thereof thereby driving the rotatable wheel atthe same rate of speed as the malnshaft. '4. A frictionvtransmission device embracing the combination with a rotative shaft of a a balance wheel'thereon having inner and outer friction'faces, a friction wheel ri idly engaged on the shaft opposite saidrba ance wheel, a transmitting friction Wheel rotatable on the shaft and having sprocket teeth and sitely disposed with reference to those on the balance wheel, a shaft journaled between said transmitting friction wheel and balance Wheel, a friction. pulley on each end thereof, a lever for incliningsaid shaft to bring said friction pulleys into engagement with one transmitting friction wheel and means for shifting the transmitting friction wheel bodily on the shaft into positive engagement with the fixed friction wheel on said shaft.

.5. In a friction transmission device the outer friction face, of a transmission friction wheel facing the same and rotatable and lon; gitudinally movable on the shaft and also having an inner and an outer friction face, a rotating shaft having its ends extending between said friction faces, a friction pulley on each end of said shaft, a lever for adjusting said friction pulleys to simultaneously engage one. face on the balance Wheel and one face on the" transmission Wheel, a lever for forcing said shaft bodily inwardly or outfriction wheel rigidly secured on the driving shaft behind the transmission friction wheel, said transmission. friction Wheel havin a flange thereon provided with sprocket teeth and complemental with the tapered friction wheel and adapted to engage thereonand means for shifting the transmission friction wheel bodily on the shaft and into engagement with. said fixed friction wheel. p 6. In a device of the class described a transmission "ear embracing a-driving shaft, a pivoted shaft, a friction pulley on each end outer and inner friction faces, means forcing said friction pulleys inwardly or outwardly to simultaneously engage both the outer or both the inner faces, means including said shaft bringing one of said; friction intoengagement withthe innerand the other with the outer'frictionface, a fixed friction wheel on'the driving shaft adjacent the rotamove said rotatable. friction the shaft into binding engagement therewith.

7 The combination with a shaft of a balance wheel secured 'thereon shaped to afford an inner and an outer friction face, a driv ing frictio'nwheel also secured on the shaft the balance wheel, a

and tapered toward face on the balance wheel and one face on the combination with the driving shaftand a'balance wheel thereon having an mner'and an thereof, a fixed friction wheel and a rotatable friction wheel on the driving shaft having table friction wheel and a lever adapted'to wheel bodily oninner and outer friction faces thereon oppo- I wardly to engage simultaneously corresponda mg friction faces on said wheels, a tapered iqo pulleys cured on the transmission friction whee shaft one of which is rigid thereon,'-means" parallel withsaiddrivin shaft, a friction l rotatable friction wheel journale d on said the main shaft, a iction' pulley on eache'nd slidable and rotatable transmission friction disk engaged on thesliaft between the driving friction wheel and the balance wheel, means forcing the same longitudinally of the shaftinto, non-sli 'ping friction enga elnent with the driving riction wheel, rigiifiy con nested friction rollers adapted to be engaged simultaneously with 'both outer or both-inner faces 01' alternately' an inner and an outer friction face on thebalance wheel and transmission friction wheel, means for adjustingthesame and a sprocket wheel integrall S6,

8. Aspeed changing mechanism comprising a driving shaft, a friction wheel 'dly secured. thereon, interacting friction viiieels secured on the shaft, means acting to slide said interacting .friction wheels into nonslipping engagement and means for driving one of said interacting Wheels from the first mentioned friction Wheel.

9 The combination with a shaft of a slidable transmission wheel thereon having'friction faces on one side thereof, a fixed driving friction whcelon the shaft adapted for engagement with the transmission wheel opposite said friction faces, a driving ,frictlon wheel adapted toengage saidfriction faces and to drive the transmission either at'a low or a high rate of speed and a lever for shift' ing the transmission wheel'bodily into engagement witlrsaid first named driving friction Wheel. Y

10. As eed changing-mechanism comprising a shaft, a balance wheel riglidgv secured 'thereon,-interacting friction W 6v on'. the' actin to slide the-other friction wheel into nons ippin engagement witness; rigid; wheel there y drivmg at shaft rate, a'shaft' policy on each endthereo and inottirs-fotad usting said friction pulleys into enga with said balance wheel and one of sa'i inter actingfriction wheels. '11; Inadevi'ce of the class descnbed the combination with-a main shaft of-a plural t of frictionwheels rigidly engaged --theree n shaft, a shaft ap ro 'mately par'allel rwith thereof and means for adjusting said friction. pulleys to sirnultaneousl on age one-of said" rigid friction wheels an sai rotatable fridtion wheel.

12. A speed changing and -reversing'rnech anism comprising a main driving shaft, a'pl n; ralit'y of rigid'friction wheels thereon, a"ro tatable friction wheel on said shaft, "a shaft par? allel with said driving shaft, a pluralitypf friction pulleys rigid y engaged thereon, means, for adjusting saiifriction ulleys toengage one'of said rigid friction w eels and said rotatable friction wheel'for speed 'aheadjl snt I 5 .dombination with a main shaft, of a hearing fall each end thereof having upwardly extendand means for simultaneously adjusting said an integral friction wheel on the op posits end of said sleeve adapted to be thrown into and out of en agement with one of the aforesaid friction w eels, a shaft, a pluralit T of friction. pulleys engaged thereto connecting: one of said first named friction wheels with said friction Wheel on the sleeve and means for adjusting said pulleys for speeds ahead or and a friction face on the opposite side there of, a shaft journaled above said, main shaft, a plurality of friction pulleys engaged thereon one adapted to normally engage between the faces of one ofsaid rigid friction wheels and the other to normally on age'loetween the friction faces of said rotate le friction Wheel,

' means for adjusting hoth of said pulleys to on age corresponding faces of one of the rigid. an the'rotatahle fnction wheels, means or adlustnig 881d alleys to simultaneously cm are gage a face of t e rigid friction wheel and to engage a face of the rotatable friction wheel for reversing the speed and means for forcing Q said rotatable friction wheel into and out 'e'nga whees.

.15; In, a device of the class described the brackets, a lever pivotedon one of said engaged in said slot, an adjssting lever p1voted tofone of said brackets and slidahly connected to the first named lever, friction wheels rigidly en'ga edon; said "ehafjtone abutting agalnst' eac bearing, a revol rhlc e'mentwitli one of said rigid. friction its i rackets, and having an outwardly extend mg slotted boss'thereon, an adjusting lever 7 friction wheel on said shaft, a shaft arallelwith, said main shaft,' a friction on! ey'engaged on each end thereof adapted to engage 'one of said rigid friction wheels and said rev- 'olublefriction wheel and means adapted to move-the rotatable friction wheel longitu ass described the wheel rotatively engaged on said shaft and provided with concentric friction .faces, a' pulley between the friction faces of each- -wheel and means for throwing .one of said pulleys against the outer friction face of one wheel and the other against the inner friction face of the other wheel.

18. In a device of the class described the combination with a drive shaft of a balance;

wheel rigidly engaged thereon and a trans-- mission wheel rotative thereon, each of said wheels having a plurality of concentric friction faces on its inner side, a friction pulley between the friction faces of each wheel, a shaft connecting said pulleys together, means for simultaneously throwing one pulley inwardly and the other outwardly intov engagement with a friction face on each.

wheel and means for simultaneously throwing said pulleys inth'e same direction to engage a friction face on each wheel.

'19. In a device of the class described the =coni1bination with two independently rotative frictionwheels, each having a plurality of friction faces thereon, a shaft betweensaid wheels, a friction pulley rigidly engaged on each end thereof and projecting between the friction faces of said wheels and means for adjusting said pulleys into engagement with said friction faces.

20-. In a transmission device the combinastantly rotatable shaft and means adapted to slide one of the aforesaid friction members onsaidcdnstautly rotatable shaft to engage of which is a the lasttnamed friction member;

21. i In a'tr'ansmission device the GOll1l)iI1L-' tion with approximately parallel shafts one of wllich is a constantly driven shaft and interacting frictionmembers on said shafts adapted to be ad usted to drive one of the friction members on the constantly driven shaft at different rates of reverse speed.

" 22. In a transn'iission device the combination with approximately parallel shafts one ipted to be constantly driven,

i 23. In a device of the class described the combination with a rotating shaft, a friction wheel rigidly engaged thereon, a friction wheel rotatable on the shaft, a shaft adjacent said rotating shaft and friction members thereon adapted to contact with said friction wheels to transmit the motion from one to the other.-

24. In a device of the class described the combination with a shaft, a plurality of friction wheels thereon, a shaft adjacent said shaft, a friction member on-each end thereof adapted to contact with said friction wheels and means shifting said friction members thereby actuating one of the friction wheels at various speeds ahead and reverse speeds.

25. In a device of the class described the combination with a shaft adapted to be constantly rotated, of a friction wheel. thereon, a friction wheel on said shaft movable longitudinallythereof, a shaft adjacent the afore said shaft, a plurality of friction members thereon adapted one to engage each friction wheel and means adapted to engage one of said friction wheels for obtaining driving shaft speed.

26. In a device of the class described the combination with a main rotatable shaft of a rock shaft adjacent the same and friction members on each shaft adapted by actuation of one of said shafts to contact for speeds ahead and reverse and means engaging one of said friction members for the ,purpose of obtaining driving shaft speed. 7

2-7. In a device of the class described the combination with a main rotatable'shaft of. inwardly facing friction wheels thereon, a

shaft extending longitiulinally of said main shaft, friction members thereon and means adapted to rock one of said shafts to throw said friction members and friction wheels mto engagement.

28. In a device of the class described the combination with a rotatable shaft of fric- ,t1on wheels engaged thereon each having a plurality of faces, a shaft ad acent the rotatable shaft, a friction member on each end thereof andv each extending between the faces of the adjacent friction wheels and means adapted to oscillate the friction niemhers to contact alternate faces on said-friction wheels.

29. l n a device of the class described the (JUIHldIIiLbXOII with a main rotatable shaft of a plurahtv of frictlon wheels on said shaftoach raving a plurality of faces, a shalt ournaled longitudinally of said rotatable shaft, flictioi mumhersthereonadapted one to extend bet con the friction. faces on oneof said friction. wheels and one to exhmd between 30. In adevice'of the class described the combination with a main rotatable shaft of a plurality of friction wheels on. said shaft each a'ving a plurality of faces, ashaft journalcd longitudinally of said rotatable shaft, friction members thereon adapted one to extend between the friction faces on one of said means adapted to be engaged by one of said with said friction wheels to drive said friction-wheel at drivii shaft speed..

31. n a device of the class described the combination with a shaft of frictionwheels thereon, having friction faces directed approximately parallel with the axis thereof and transmitting 'lnecl'lcnisrn adapted to operatively connect said faces whereby one of said friction wheels may be driven forward and backward at various speeds.

32. In a device of the class described the combination with a driven shaft of friction wheels thereon one relatively movable with respect to the other and each having friction faces directed at anangle with'the plane of rotation of said Wheels and friction members operatively connected adapted to contact faces and 33. n a device combination with a driven shaft of friction wheels thereon each having inwardly dirooted friction l faccsffonetljjof said friction wheels. having a frlctlon flange, a shaft on shift-said friction members to contact with rotation thereof, a shaft adjacent therotatamembers to said wheels said friction faces and to neutral position, a

friction wheel on the shaft adjacent saidfriction flange andi nleans adapted to sl'lift said flange to engage said last named friction wheel when theffriction 'rnelnbers are in neutral position.

- 34. In a mechanism of the class described combination with a rotatable shaft of friction wheels thereon one of which is rotatablewith the shaft and the other movable relatively andfllongitudinallyof the shaft, having friction faces directed in approximately the direction of the axis of ble shaft, :frictioni'membersthereon extend-- 1 1g between the faces on said friction wheels, means "adaptedi'to oscillate said friction contact said faces and means adapted to move. said friction members in the same plane. w

35. In a. device of the class described the adopted to drive one ofsaid wheels at variousforward and backward s eeds.- y

of the class described the rality ofiinwerdly facing friction wheels the same for speeds ahead an reverse speeds and a friction wheel on the shaft adapted to be engaged by one of the inwardly facing friction wheels to drive at shaft speed.

36. In a device of the class described the combination with a driven shaft, of friction wheels engaged thereon, each of which have shaft journaled ad'aoentsaid driven shaft, friction members t ere-on one for each friction Wheel, a lever, o tween the same an said friction members frihtion members to contact the friction faces for speed in one direction, a lever adjacent said lever, o erative connections be tween the same on friction members where.- by the friction members are shifted for speeds in another direction.

37. In a-device of the class described the combination with shafts of friction Wheels on one having inwardly directed friction faces,

each friction wheel and adapted to extend between the frictionfaces on the same Wheel,

bers oppositely to contact the faces of said friction wheelsfor speeds in one direction and means ads. ted to shift said friction members in the some direction to contact said friction feces thereby imparting motion in another direction.

38. In 9. device of-the class described the it of friction wheels thereon each provided w th plurality of frictional contact faces, a shaft journaled adjacent the driven shaft, friction members thereon, one for each fricdepressingone of said friction members and elevatin the other to enga e the friction faces ano means adapted to efievate said fri c' tion members simultaneously and to-depress the same simultaneously to contact the friction faces.

In a device of the class described the combination 'ivith shafts, friction Wheels on one of the same each provided with inwardly directed feces and directed friction face,

one of said shafts one for each wheel and adapted to cont-act either of the friction faces on its corresponding friction-wheel, a friction elementon one 'of said shafts and means shifting said friction wheel having the outwsrdly directed friction face to contact the friction element. r

40. In a device of the class combination with rotatable shafts each hav ing a plurality of friction members thereon,

friction faces directed at angles therewith, a

erative connections bemeans adapted tomove said friction memtion wheel between the faces of which the same 1s positioned, means simultaneously described the,

means rocking-some of said friction members combination with a rotatable shaft of a phithereon, frictional means adapted to connect whereby actuation. of the lever shifts the I friction members on the other shaft, one for combinetion'withf a driven shaft of a pluralone having an outwardly friction members. on.

to contact the others for speeds in one direc- In testimony whereof I have hereunto tion, means shifting the same friction memsubscribed my name in the presenceof two 'bers simultaneously in the same direction for subscribing witnesses.

speed in the opposite direction; and a friction GEORGE W. MARBLE. Jimember onone of said shafts adapted to Witnesses:

oontact with one of the aforesaid friction 4 O. W. HILLS, 

